<template>
  <div class="app-container">
    课程列表

    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="courseQuery.status" clearable placeholder="课程状态">
          <el-option value="Normal" label="已发布"/>
          <el-option value="Draft" label="未发布"/>
        </el-select>
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getList()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table
      :data="list"
      border
      fit
      highlight-current-row>

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title" label="课程名称" width="400"/>

      <el-table-column label="课程状态">
        <template slot-scope="scope">
          {{ scope.row.status==='Normal'?'已发布':'未发布' }}
        </template>
      </el-table-column>

      <el-table-column prop="lessonNum" label="课时数" />

      <el-table-column prop="price" label="课程价格" />

      <el-table-column prop="gmtCreate" label="添加时间" />

      <el-table-column prop="viewCount" label="浏览数量"  />

      <el-table-column label="操作" width="400" align="center">
        <template slot-scope="scope">
          <router-link :to="'/edu/course/info/'+scope.row.id">
            <el-button type="primary" v-if="hasPerm('course.update')" size="mini" icon="el-icon-edit">编辑课程</el-button>
          </router-link>
          <router-link :to="'/edu/course/chapter/'+scope.row.id">
            <el-button type="primary" v-if="hasPerm('chapter.update')" size="mini" icon="el-icon-edit">编辑大纲</el-button>
          </router-link>
          <el-button type="danger" v-if="hasPerm('course.remove')" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除课程</el-button>
        </template>
      </el-table-column>
    </el-table>

  <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    />

  </div>
</template>
<script>
import course from "@/api/edu/course";
export default {
  //核心代码
  data() {
    return {
      list: null,
      page: 1,
      limit: 10,
      total: 0,
      courseQuery: {},
    };
  },
  methods: {
    getList(page = 1) {
      this.page = page;
      course.getCourseList(this.page, this.limit, this.courseQuery)
        .then((response) => {
          this.list = response.data.list;
          this.total = response.data.total;
        });
    },
    removeDataById(id) {
      this.$confirm("此操作将永久删除课程记录, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        course.deleteCourse(id)
          .then((response) => {
            //提示信息
            this.$message({
                message: '删除成功',
                type: 'success'
            })
            //重新查询列表
            this.getList();
          });
      });
    },
    resetData(){
      this.courseQuery = {};
      this.getList();
    }
  },
  created() {
    this.getList();
  },
  mounted() {},
};
</script>